Dosing regimens for treatment of proliferative disorders comprising administration of sapacitabine

a technology of proliferative disorders and dosing regimens, which is applied in the direction of biocide, drug compositions, animal husbandry, etc., can solve the problems of single-strand dna breakage that cannot be repaired, and achieve excellent anti-tumour activity, improved storage stability and ease of handling, and desirable pharmacokinetic profile

Active Publication Date: 2013-09-17
CYCLACEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]Prior art sapacitabine dosing regimens typically involve administering the active agent over extended durations, for example, for 7 or 14 consecutive days in a 21 day cycle. Advantageously, the presently claimed dosing regimens maximise drug efficiency, whilst minimising the adverse side effects associated with the treatment. Administering sapacitabine to a patient over a shorter duration followed by a rest period allows higher dosages of sapacitabine to be administered to the patient and has been shown to alleviate certain adverse side effects.

Problems solved by technology

It causes single-strand DNA breakage that cannot be repaired by ligation.

Method used

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  • Dosing regimens for treatment of proliferative disorders comprising administration of sapacitabine

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0234]The B-form of sapacitabine was prepared in accordance with the methodology described in EP 536936 and EP 1364959, both in the name of Sankyo Company Limited.

Capsule Preparation

[0235]Liquid fill capsules were prepared in accordance with the methodology described in PCT / GB2006 / 004927 (WO 2007 / 072061; Cyclacel Limited).

[0236]The drug is supplied as 25 mg and 75 mg opaque white, gelatin capsules. This formulation comprises liquid-filled capsules of a sapacitabine-B crystalline form in miglyol 812N. Capsules are packaged in high-density polyethylene bottles (50 capsules per bottle), with low-density polyethylene screw-cap, child-resistant closures. The higher strength was formulated to fill into a size 1 capsule, while the lower strength was formulated to fill into a size 3 capsule as appropriate. All materials are of pharmacopoeial quality. A summary of the formulation components is provided in the table below.

[0237]

Formulation Capsule (mg / capsule)Unit FormulaIngredient25 mg75 mgS...

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Abstract

One aspect of the present invention relates to the use of sapacitabine, or a metabolite thereof, in the preparation of a medicament for treating a proliferative disorder, wherein the sapacitabine or metabolite thereof is administered in a dosing regimen comprising at least one treatment cycle, wherein said treatment cycle comprises administering a therapeutically effective amount of sapacitabine or metabolite thereof for about 2 to about 6 days per week, for 2 weeks out of 3 weeks. Another aspect of the invention relates to the use of sapacitabine, or a metabolite thereof, in the preparation of a medicament for treating cutaneous T-cell lymphoma (CTCL).

Description

RELATED APPLICATIONS[0001]The present application is a 35 U.S.C. 371 national stage filing of International Application No. PCT / GB2008 / 001424, filed Apr. 24, 2008, which claims priority to Great Britain Application Nos. 0708021.1, filed Apr. 25, 2007 and 0723723.3, filed Dec. 4, 2007. The entire contents of each of these applications are hereby incorporated by reference herein.[0002]The present invention relates to therapeutic uses and dosing regimens for the compound 1-(2-C-cyano-2-deoxy-β-D-arabino-pentofuranosyl)-N4-palmitoylcytosine or a metabolite thereof, otherwise known as sapacitabine.BACKGROUND TO THE INVENTION[0003]Nucleoside analogues represent a major group of antitumour cytotoxic drugs. For example, the therapeutic use of pyrimidine nucleosides in the treatment of proliferative disorders has been well documented in the art. Commercially available antitumour agents of the pyrimidine series include 5-fluorouracil (Duschinsky, R., et al., J. Am. Chem. Soc., 79, 4559 (1957)...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61P35/00
CPCA61K31/7068A61K31/513A61P11/00A61P35/00A61P35/02
Inventor CHIAO, JUDY H.
Owner CYCLACEL
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